94 z28 - 30,000 miles

i just installed a s-trim blower, 42lbs injectors-computer tune-255 fuel pump,msd btm unit. NGK TR6 plugs gapped to 0.035 and accel 8mm wires. First the car has been sitting since march- tore it apart and installed 1.6 rockers and ended taking them back out for the stock. the car was torn apart for months until i read up on parts and got time to install the blower and parts needed with it. the gas is the same gas from september and stable was added to the tank. drove the car three times in march and it has a half tank now. thought i needed a new starter but the msd box wasn't hook up right and the car didn't start so right away just put another starter on. car takes way to long to turn over?? before you didn't even have to turn the key all the way just tap it on vroom. whats the deal with that? . also my check engine light is on? car idles perfect... when you first give it gas it holds back? new fuel filter added.. then after like three times of kinda spiking the gas then its better. now my thought and my buddies who has built motors thinks the gas deal and the fact of the car sitting for so long is why the gas pedal is acting like that. car needs to be ran pretty good to blow carbon out. also maybe mositure got into the tank? the forst day the car started a bunch of times with now problem. next morning it fires up and i let it run for awhile then drained the coolant and let it sit for awhile had to do somethings in the house. filled it back up and it woudn't start it would just crank? i unplugged the 2bar map sensor and my grantelli motorsports maf unit and the car fired right up? they both have to be unplugged now for the car to start? if only one or the other is unplugged it still won't start just tries to.. help me thanks

 

Did you retune the computer for the 2 Bar MAP yet?

Sounds like somethings could be wrong with the tune... without the MAF signal the car will run on speed density tables. If the speed density tables aren't tuned, then the car probably won't run right with the 2 Bar MAP. Have you tried the stock MAP with the MAF unplugged?

Dave

 

i'm pretty sure madz28 said he tuned for the two bar map? maybe one of us forgot? only thing is i don't have the old plug for the old map sensor the new one has a different shape plug...